2662138645 has 8 divisors (see below), whose sum is σ = 3196992600. Its totient is φ = 2128093440.

The previous prime is 2662138631. The next prime is 2662138663. The reversal of 2662138645 is 5468312662.

It can be written as a sum of positive squares in 4 ways, for example, as 214066161 + 2448072484 = 14631^2 + 49478^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2662138645 - 2⁷ = 2662138517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194920 + ... + 208129.

It is an arithmetic number, because the mean of its divisors is an integer number (399624075).

Almost surely, 2^2662138645 is an apocalyptic number.

It is an amenable number.

2662138645 is a deficient number, since it is larger than the sum of its proper divisors (534853955).

2662138645 is a wasteful number, since it uses less digits than its factorization.

2662138645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404375.

The product of its digits is 414720, while the sum is 43.

The square root of 2662138645 is about 51595.9169411689. The cubic root of 2662138645 is about 1385.9372153143.

The spelling of 2662138645 in words is "two billion, six hundred sixty-two million, one hundred thirty-eight thousand, six hundred forty-five".